I've found similar posts:
- Hide the up/down vote arrows on your own posts
- Remove vote UI elements beside own question and answer posts
But people has asked about hiding the arrows.
Members can't vote for their own questions, what's the point of having the voting arrows enabled?
The system makes you think you can upvote/downvote your own question/answer, but then you get notified that you can't. Why are the up/down vote buttons enabled then?
We can lock arrows on own posts and change the color (to make it obvious that they are inactive). If you are scared that people wouldn't understand why the arrows are inactive, we can add hint on it on hover.